, NH +? What is the pK of NH +?

Q: Two pk, values are reported for malonic acid, a compound with two COOH groups. Explain why one pk,…

A: pKa is defined as the negative logarithm of the acid dissociation constant. If the values of pKa is…

Q: a If an acid, HA, dissolves in water such that the Ka is 10000, what is the pK, of that acid? pK, =…

A: Given that: The acid HA dissolves in water  such as: HA (aq) + H2O (l) → H3O+ (aq) + A- (aq) For,…

Q: Given the following acids aranged from strongest to weakest HA1> HA2> HA3> HA4 . Arrange their pKa

A: Answer:- This question is answered by using the simple simple relationship between the strength of…

Q: Which acid do you think would have the lower pKa value: HBrO4, HBrO3, HBrO2, or HBrO? Explain your…

A: Here we are asked which acid  would have the lower pKa value.the acids are as follows,HBrO4, HBrO3,…

Q: Which H is most acidic? Highlight this H. Which site is most basic? Highlight this site. H. -ö:

A: a) The compound given is,

Q: Which of the following has the lowest pKa value? Hint: a methyl group is an electron donating group…

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Q: Calculate the pH of a 0.35 M solution of hydrocyanic acid (HCN), which has a pKa of 9.31. Your…

A: Given, Concentration of HCN, [HCN]= 0.35 M pKa of HCN is 9.31 So, Ka = 10-pKa = 10-9.31 =4.90×10-10…

Q: Consider 0.2 M H2A (Given Ka1= 1x10^-5 , Ka2=1x10^-9). Calculate the Concentration of HA^- at pH =

A: We have to  calculate the Concentration of HA^-

Q: An acid with a high pKa: Select one: O a. is a strong acid O b. has a weak conjugate base O c. is a…

A: pKa is a constant that gives the properties of acidic strength.

Q: A naturally occurring amino acid such as alanine has a group that is a carboxylic acid and a group…

A: Answer: Hey, Since you have posted a question with multiple sub-parts, we will solve first three…

Q: CaC2O4 (Ksp = 4.0 x 10‒9) is suspended in water. Which will increase the [C2O42‒] in solution?…

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Q: Be sure to answer all parts. Calculate the following values. (a) What is the pK, of NO₂? (K₂ of…

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Q: 2.82 Which H atom in vitamin C (ascorbic acid) is most acidic? он но. но OH vitamin C ascorbic acid

A: To identify the most acidic hydrogen of vitamin C(ascorbic acid) we have to consider the stability…

Q: Which carboxylic acid has the lower pKa, pyruvic acid (CH3COCO,H) or acetoacetic acid…

A: To find: Which carboxylic acid has the lower pKa value.

Q: The higher the pK, value the weaker the acid. True False

A: The higher the pKa value weaker is the acid is true or false has to be given,

Q: Identify the conjugate base of H2BO3¯.

A: According to Lowery and Bronsted, an acid is defined  as substance which has a tendency to donate a…

Q: Which H atom in vitamin C (ascorbic acid) is most acidic?

A: The protons present in the given ascorbic acid can be represented as follows,

Q: A weak acid has a pKa of 7.6. What is the proportion of A- to HA if pH is 9.08?  Round to one…

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Q: 4) Rank the F/U in order of increasing pH. Explain the basis of your ranking. Assume the…

A: In order of rising pH, rank the F/U. The more electronegative an element is, the less stable its…

Q: The pK, of H2O is 15.7 and the pKa of CH3COOH is 4.8. What label and reason correctly describe a…

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Q: An unknown weak base has a delta G of 25.0 at 298K. What is the Kb of this base?  A) 4.05* 10^-5…

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Q: Calculate the pH of a 0.12 M solution of hydrocyanic acid (HCN), which has a pKa of 9.31.

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Q: given weak acid has a pka of 7.83. Calculate the percent ionized in .34M of the weak acid

A: Given acid is weak so we will use concept of weak acid. Percent ionisation=√ka×C

Q: a) Calculate Ka of formic acid whose pKa= 3.75. b) Calculate pKa of nitromethane whose Ka = 5.0 x…

A: A) pka = 3.75  B) Ka  = 5.0 × 10-11

Q: Which H is most acidic? Which site is most basic? Highlight this H. Highlight this site. H H.

A: Introduction: We have to predict the hydrogen which is more acidic and site which is more basic…

Q: weak acid has a pKa of 7.58. What is the proportion of A- to HA if pH is 9.42?  Round to one decimal…

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Q: Problem Solving. Solve the following problems, use GRESA format in answering The pH of the given…

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Q: The side chain of acetyl-L-lysine-OMe has a pKa=10.5 and its acid-dissociation reaction  is shown…

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Q: The Kb for dimethylamine, CH3NH2, at 25oC is 4.0×10-4. What’s the Ka of its conjugate acid?

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Q: The pkb of methylamine, CH3NH2, is 3.36. Calculate the pk, of its conjugate acid, CH3NH3*. pka =

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Q: (b) Calculate the pH of 0.0005 mol dm³ ethanoic acid when its pK 4.75 CH₂COOH(aq) à CH₂COO (aq) + H*…

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Q: A weak acid has a pKa of 8.03. What is the pH if the solution has 9,860 times more HA than A-?…

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Q: pKa of CF3CH2OH is higher than the pKa of a CCl3CO2H. Provide the reason Group of answer choices a)…

A: pKa is the negative log of the acid dissociation constant or Ka value. A higher pKa value indicates…

Q: A naturally occurring amino acid such as alanine has a group that is a carboxylic acid and a group…

A: The part "a" contains insufficient data as table 2.1 is not mentioned and "Since you have posted a…

Q: What is the [A-]/[HA] concentration ratio required to obtain a pH 5.3, given that the pka of HA is…

A: The pH of a buffer (HA/A-) is determined using Henderson-Hasselbalch equation- pH = pKa +…

Q: HCN + HPO4 2- CN-1+ H2PO4 -1 Which specie is the conjugate base?

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Q: The of formic acid is pKa 3.750. What is the Ka of formic acid?

A: The relationship between Ka  and pKa is  pKa = -log(Ka ) => Ka = 10-pKa

Q: pKb1 of  0.10 M chloroacetic acid 0.20 M carbonic acid 0.40 M citric acid

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Q: The side chain of acetyl-L-lysine-OMe has a pKa=10.5 and its acid-dissociation reaction  is shown…

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Q: With a pKa of 1.2, squaric acid is unusually acidic for a compound containing only C, H, and O. :ÖH…

A: Squaric is highly acidic in nature when there is removal of one proton takes Place then, the…

Q: If the pKa for formic acid is 3.75 the ratio of formate (A) to formic acid (HA) at pH 4.15 is 5:1.…

A: Since you have posted a question with multiple subparts , we will solve the first three subparts for…

Q: What is the conjugate acid to SO42- ? Select one: a. H2SO4 b. HSO4- c. H3SO4+

A: When H+ is added to the base, its conjugate acid is formed. SO42-  +  H+  →  HSO4-

Q: Using the pk, table, estimate pK, values for the most acidic group on the compounds below, and draw…

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Q: Using the pk values, calculate the pI for each of the following:

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Q: d) Does DMAP act as a Brønsted or Lewis base?

A: The question is based on the concept of Basicity. We have to explain the nature of DMAP base.

Q: Which compound Answer will have the LOWEST pI value and which compound Answer will have the HIGHEST…

A: Each of the given molecule has two acidic proton donors (acids) with pKa1 and pKa2 values.  The…

Q: 1. HN a. polar/non-polar; b. Neutral/acidic/basic c. Also write whether the side chain is…

A: The answers are as follows:

Q: The pka of formic acid is 3.750. What is the Ka of formic acid?

A: The pKa value is the value used to indicate the strength of an acid. It is the negative logarithm of…

Q: Citric acid, a triprotic acid, has 3 pKa values (3.128, 4.761, and 6.396). What is the pKb of…

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Q: . Which is the stronger acid: (a) Benzoic acid with a Ka of 6.5 x10-5 or hydrocyanic acid with a Ka…

A: A smaller Ka values implies that the acid does not dissociates completely, so it means smaller Ka…